Patents by Inventor John E. Sargeant

John E. Sargeant has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Orthodontic bracket with metallic coated bonding base
    Patent number: 4626209
    Abstract: An orthodontic bracket containing a thin metallic coating on the bracket base; the coating being applied onto the bracket base by thermally spraying a molten metallic powder.
    Type: Grant
    Filed: April 17, 1984
    Date of Patent: December 2, 1986
    Assignee: Unitek Corporation
    Inventors: Min H. Tsai, John E. Sargeant
  • Pleural drainage system
    Patent number: 4439189
    Abstract: A system for draining pleural cavities. A container having a plurality of cavities is employed with a vacuum source and an inlet from the patient. In the first cavity, a port is defined to limit the liquid contained therein. This port opens into a second cavity for collection of drained fluids. A vacuum regulator mechanism is incorporated at one end of the container to prevent injury to the patient. Thus, a water seal is defined about the inlet tube. A separate cavity collects drained fluids and a third area provides vacuum control.
    Type: Grant
    Filed: June 18, 1981
    Date of Patent: March 27, 1984
    Assignee: Bentley Laboratories, Inc.
    Inventors: John E. Sargeant, Jack L. Hoffa